Inflammatory bowel diseases (IBDs), comprising Crohn’s disease (CD) and ulcerative colitis (UC), are lifelong immunologically mediated disorders affecting the gastrointestinal tract. With an onset often during young adulthood, IBD has a relapsing-remitting course. The majority of relapses relate to the underlying disease, but in a significant proportion of patients, disease flares are triggered by, or are due to, superimposed gastrointestinal infections. The 2 most well recognized among such infections are those due to Clostridiumdifficile and cytomegalovirus (CMV). The past 2…